<!DOCTYPE html>
<html>
<head>
  <title>Test</title>
  <script type="text/javascript" src="./mod.js"></script>
</head>
<body>
    <div id="content"></div>
    <script type="text/x-jsx">
        import React, { Component } from 'react'
        import { render } from 'react-dom'

        // tutorial1.js
        class CommentBox extends Component {
          render() {
            return (
              <div className="commentBox">
                Hello, world! I am a CommentBox.
              </div>
            )
          }
        }

        render(
          <CommentBox />,
          document.getElementById('content')
        )
    </script>
</body>
</html>
